Answer:
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever. What am I?
Lighter than what I am made of, more of me is hidden than is seen. What am I?
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go darkness follows me.
The shorter I am, the bigger I am. What am I?
I soar without wings I see without eyes. I've traveled the universe to and fro. I've conquered the world yet I've never been anywhere but home.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?